testpython.py (6b56198) - testpython.git

testpython.py

#!/usr/bin/env python3
# "Hello Friends" in Chinese: 朋友你好
import os
import sys
import time
import functools
from argparse import ArgumentParser
import counter.counter
import sitesize.sitesize
from typing import Optional, Callable
from decorators import timeit, profile
from pathlib import Path
try:
    import marshmallow
    marshmallow_imported = True
    import bored.bored
except ModuleNotFoundError:
    marshmallow_imported = False

v_print:Callable
def set_v_print(verbose: bool) -> None:
    """
    Defines the function v_print.
    It prints if verbose is true, otherwise, it does nothing.
    See: http://stackoverflow.com/questions/5980042
    :param verbose: A bool to determine if v_print will print its args.
    """
    global v_print
    v_print = print if verbose else lambda *a, **k: None

# This class demonstrates decorators.
#
# Consider these alternatives for data classes:
# * dataclasses.dataclass: sensible defaults, compares class type, can be frozen
#                          See "bored" module for data validation with marshmallow
# * collections.namedtuple: esp. useful for results of csv and sqlite3
class Coffee:

def __init__(self, price: float):
        self._price = price

@property
    def price(self) -> float:
        return self._price

@price.setter
    def price(self, new_price: float) -> None:
        if new_price > 0 and isinstance(new_price, float):
            self._price = new_price
        else:
            raise ValueError("price must be a non-negative float.")

@timeit.timeit
@profile.profile  # may invoke with parameters, too
def main(debug: bool) -> None:
    script_dir = os.path.abspath(os.path.dirname(sys.argv[0]))
    print(f'{sys.argv[0]} is in {script_dir}.')

# Raymond Hettinger's example use of queue.Queue and threading.Thread
    v_print("Running counter...")
    counter.counter.run()

# Raymond Hettinger's example use of multiprocessing.pool's ThreadPool
    v_print("Running sitesize...")
    sitesize.sitesize.run()

# Jessica Chen Fan's validation with dataclasses, marshmallow and desert
    if marshmallow_imported:
        print(bored.bored.get_activity())

if (Path.home() / 'bin').exists():
        print('Your home directory has a bin/ directory.')

cuppa = Coffee(5.00)
    cuppa.price = cuppa.price - 1.00

if __name__ == '__main__':
    parser = ArgumentParser(description='Just a template sample.')
    parser.add_argument('-d', '--debug', action='store_true')
    parser.add_argument('-v', '--verbose', action='store_true')
    args = parser.parse_args()
    set_v_print(args.verbose)
    main(args.debug)

testpython.git

Add a dataclass and datavalidation, add Path example.